| REFERENCE | TITLE | NAME | BORN | DIED | TITLE | NAME | BORN | DIED | COMMENTS | |
| 40 | King | Nicholas I "Nikola" of Montenegro | 1841 | 1921 | Milena Vukotic | 1847 | 1923 | Montenegro was ruled by prince-bishops from 1515 until 1851 when Daniel I (1826-1860) established
himself as secular ruler. Daniel's efforts to reform and modernise Montenegro led to his murder. Another source mentions Danilo was assassinated in
August 1860 as he was boarding a ship at the port of Kotor by Todor Kadic, from the Bjelopavlici tribe, the motive being over Danilo's mistreatment
of Kadic's family. Nicholas succeeded his uncle Danilo I as Sovereign Prince of Montenegro on 13 August 1860. He became King of Montenegro on 28 August 1910, on the occasion of his Golden Jubilee, when the Kingdom of Montenegro was proclaimed and accorded International recognition as a Sovereign Kingdom. Montenegro was annexed to the new Kingdom of the Serbs, Croats and Slovenes (Yugoslavia) on 13 November 1918 but was not recognised by King Nicholas I and he was forced into exile. Death report of King Nicholas I. A New York Times article dated 22 October 1921 reported Nicholas I's wife Queen Milena signed a Decree which had the effect of disbanding and no longer recognising the de jure Government of Montenegro. |
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| 40.1 | Princess | Zorka of Montenegro | 1864 | 1890 | King | Peter I of Serbia | 1844 | 1921 | See 7.5 - Peter became King of Serbia on 15 June 1903 following the murder of King Alexander I of Serbia (from the unrelated House of Obrenovich) and his wife Queen Drago in their palace during an army revolt. The Kingdom of Serbia was renamed the Kingdom of Serbs, Croats and Slovenes in 1918. | |
| 40.2 | Princess | Militza of Montenegro | 1866 | 1951 | Grand Duke | Peter of Russia | 1864 | 1931 | See 4.972 | |
| 40.3 | Princess | Anastasia "Stana" of Montenegro | 1868 | 1935 | Duke | George of Leuchtenberg | 1852 | 1912 | See 18.277 | |
| 40.3 | Princess | Anastasia "Stana" of Montenegro | 1868 | 1935 | Grand Duke | Nicholas of Russia | 1856 | 1929 | See 4.971 | |
| 40.4 | Princess | Marija "Maritza" of Montenegro | 1869 | 1885 | ||||||
| 40.5 | King | Danilo II of Montenegro | 1871 | 1939 | Duchess | Auguste Jutta of Mecklenburg-Strelitz | 1880 | 1946 | See 24.8212 - Danilo abdicated on 7 March in 1921 in favour of his nephew Michael only one week after succeeding his father as King of Montenegro | |
| 40.6 | Princess | Jelena "Elena" of Montenegro | 1873 | 1952 | King | Victor Emmanuel III of Italy | 1869 | 1947 | See
8.121 - Victor Emmanuel became unpopular because of his long association with Benito Mussolini and abdicated on 9 May 1946 in favour of his son Umberto. He died in exile in Egypt. Some "Reminiscences of the Beautiful Elena of Montenegro" written shortly after her husband Victor Emmanuel succeeded his father as King of Italy |
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| 40.7 | Princess | Anna of Montenegro | 1874 | 1971 | Prince | Franz Josef "Franzjos" of Battenberg | 1861 | 1924 | See 5.145 | |
| 40.8 | Princess | Sophia of Montenegro | 1876 | 1876 | ||||||
| 40.9 | Prince | Mirko of Montenegro (Grand Duke of Grahovo and Zetà) | 1879 | 1918 | Natalija Constantinovic | 1882 | 1950 | Natalija was a second cousin to King Alexander of Serbia (House of Obrenovic) (1876-1903) who along with his wife Queen Draga were assassinated in Belgrade 10 Jun 1903. Natalija's paternal grandmother Anna Obrenovic (1821-1868) and King Alexander of Serbia's grandfather Milosh Obrenovic (1829-1861) were sister/brother. | ||
| 40.91 | Prince | Shchepac "Stephan" of Montenegro | 1903 | 1908 | ||||||
| 40.92 | Prince | Stanislav of Montenegro | 1905 | 1908 | ||||||
| 40.93 | King | Michael I of Montenegro | 1908 | 1986 | Geneviève Prigent | 1919 | 1990 | Michael succeeded his uncle Danilo as King of Montenegro (under the Co-Regency of his Grandmother, Milena, the Dowager Queen Consort and his Prime Minister General Gvozdenovic). He became a prisoner in a Nazi concentration camp during World War II having refused to return to Montenegro as puppet King. | ||
| 40.931 | Crown Prince | Nicholas "Nikola" II of Montenegro | 1944 | Francine Navarro | 1950 | 2008 | Nicholas succeeded his father, King Michael, as titular King of Montenegro (and uses the style Crown Prince Nikola II) on 24 March 1986 | |||
| 40.9311 | Princess | Altinaï of Montenegro | 1977 | Anton Martynov | ? | |||||
| 40.9312 | Hereditary Prince | Boris of Montenegro (Grand Duke of Grahovo and Zetà) | 1980 | Véronique Canas da Silva | 1976 | |||||
| 440.93121 | Princess | Milena of Montenegro | 2008 | |||||||
| 40.94 | Prince | Paul of Montenegro (Prince of Raska) | 1910 | 1933 | ||||||
| 40.95 | Prince | Emanuel of Montenegro | 1912 | 1928 | ||||||
| 40.J | Princess | Xenia of Montenegro | 1881 | 1960 | ||||||
| 40.K | Princess | Vera of Montenegro | 1887 | 1927 | ||||||
| 40.L | Prince | Peter of Montenegro (Grand Duke of Zahumlije) | 1889 | 1932 | Violet Wegner | 1887 | 1960 |
